bone strength to help prevent fractures. do not take actonel if you have low blood calcium, severe kidney disease, or cannot sit or stand for 30 minutes. follow all dosing instructions. stop taking actonel and tell your doctor if you experience difficult or painful swallowing, chest pain, or severe or continuing heartburn. these may be signs of serious upper-digestive problems. promptly tell your doctor if you develop severe bone, joint, or muscle pain, or if you develop dental problems, as serious jawbone problems have been reported rarely. call now for a free trial offer of once-a-month actonel. and help reverse bone loss.